Good Aluminum Case

I am looking for a light, durable, mid-tower aluminum case that is well-ventilated, spacious, and has good cable management; basically I want all the perks of a steel case, but only at 10-15 lbs. I would be delighted if the case was a sleeker version of the Lian Li Lancool PC-K62 steel case or the Cooler Master HAF 922.

Please let me know my best options and compare them to the stated cases if you can!

My main issues with the Lian Li cases is that they do not appear to have as good ventilation as the PC-K62 and that they have comments that claim they are flimsy. I was originally looking at the LIAN LI PC-9F.